We are offering a wide assortment of excellent quality HSS Circular Saw to our clients. These HSS Circular Saws are provided in plain tooth and staggered tooth form to give chip clean chit. Thin slitting saws are normally recommended for reducing wastage of costly material.

1. HSS Circular Saw Blades
mechelec

2. About us
MECHELEC manufactures the largest
range of HSS Saws and Knives designed
for long-period cutting for diverse
applications in various industries.
From the very beginning, our efforts
have been directed towards producing
nothing but the very best. No methods
provided by Modern Scientific and
Engineering Research have been
neglected. Besides using the best
imported material, MECHELEC gives
great importance to correct heat
treatment in the manufacture of Saws
and Knives. The PVD coating provided
delivers 3 to 10 times longer tool life.
MECHELEC Knives give 30% more life
MECHELEC Knives are the best in the country
MECHELEC Knives are made out of best material
MECHELEC Knives are as good as the best in the world
MECHELEC Knives are specially treated for extra wear resistance
MECHELEC Knives are guaranteed against defective material and workmanship
Correct and constant heat treatment is
fundamental in order to fully utilize the
metallurgical and technological features
of high-speed steels and emphasize all
their technical features. Mechelec HSS
saw blades are heat treated in salt bath to
achieve best results.

3. Standard MECHELEC HSS saw blades are
supplied in high speed steel grade M2 = DIN
1.3343, and can also be made available in
cobalt-alloyed steel grades, such as M35 =
DIN 1.3243 Diameters vary from 150 to 500
mm in various tooth forms.
M2 / DIN 1.3343 Chemical Composition %
C Si Mn P S
C
o Cr Mo V W
0.86 - 0.94 <=0.45 <=0.4 <=0.03 <=0.03 0 3.80 - 4.50 4.70 - 5.20 1.70 - 2.00 6.00 - 6.70
M35 / DIN 1.3243 Chemical Composition %
C Si Mn P S Co Cr Mo V W
0.88 -
0.96 <=0.45 <=0.4 <=0.030 <=0.030 4.5 - 5.00 3.80 - 4.50
4.70 -
5.20
1.70 -
2.00
6.00 -
6.70
Alternatively a range of PVD (Physical Vapour Deposition)
cutting blades can also be supplied with the following
coatings:
TiN - Titanium Nitride; a good all round coating which
allows saw cutting at much higher speeds than with HSS
Steam Treated saw blades and are recommended for
cutting steel tubes and profiles
TiALN - Titanium Aluminium Nitride; provides better
protection against higher temperatures than a TiN
coating. Recommended for cutting applications on which
fast cutting speeds or very hard materials cause higher
temperatures.
TiCN - Titanium Carbon Nitride; has a very low friction
coefficient, extending the cutting blade life in steel tube
cutting applications. Suitable for cutting all steel types
including stainless steel.
MECHELEC
MECHELEC

4. Tooth shape A is normally used on fine
toothing (<T3) for applications such as brass
alloy cutting, jewellery and screw slotting.
Tooth shape AW, unlike type A, is
alternately beveled, thus optimizing chip
shredding. It is particularly suitable for
precision cutting.
Tooth shape B is normally used for thin-
walled pipes and the cutting of structural
shapes, especially where chip removal is not
an issue.
Tooth shape BW is primarily used for
cutting pipes and sections. The tooth is
alternately beveled at 45°, breaks the
chip in two and guarantees good chip
evacuation.
Tooth shape C is used for solid sections or
very thick pipes. The chip is shredded into
three parts due to the presence of both a
finishing tooth without chamfer and a pre-
cutting tooth (longer than 0.25 mm) with
two chamfers on each side.
MECHELEC HSS circular saws are
generally available in BW tooth
form. Other tooth form can be
provided on request.
The circular saw blades are
manufactured with the following
standard angles:
HSS - Dmo5 HSS - Co5
γ = 18⁰± 2⁰ γ = 12⁰± 2⁰
α = 10⁰± 2⁰ α = 8⁰± 2⁰
B Sawblade Thickness
T Tooth pitch
H Tooth height
R Gullet diameter
Γ Rake angle
Α Relief angle
S Thickness of piece
•
•

5. TOOTH PITCH: Once the material and the
section to be cut have been identified, the
pitch must be chosen. The correct pitch will
prevent dangerous vibration and guarantee
correct chip evacuation. The following data
are approximate.
In order to choose the right number of teeth, it is
important to consider the section that needs to be cut
and the material. The pitch is correct when the teeth
to section ratio is at least 1:3 for solid bars and 1:1 for
pipes and structural shapes.
Pipe and Structural Shapes
O Avz = 0.05 to 0.08 mm/Z
d s T s T
≤ 20mm ≤ 1mm 3 > 1mm 4
≤ 30mm ≤ 1.5mm 5 > 1.5mm 5.5
≤ 40mm ≤ 2mm 6 > 2mm 7
≤ 50mm ≤ 4mm 6 > 4mm 7
≤ 60mm ≤ 4mm 7 > 4mm 8
≤ 70mm ≤ 3mm 7 > 3mm 8
≤ 80mm ≤ 4mm 8 > 4mm 10
≤ 90mm ≤ 4mm 8 > 4mm 10
≤ 100mm ≤ 7mm 10 > 7mm 12
≤ 120mm ≤ 5mm 10 > 5mm 12
≤ 140mm ≤ 4mm 10 > 4mm 12
Solid Bar
Avz < 0.08
mm/Z
Avz > 0.08
mm/Z
d T T
≤ 20mm 5.5
≤ 30mm 7
≤ 40mm 8
≤ 50mm 9
≤ 60mm 10 12
≤ 70mm 11 12
≤ 80mm 12 14
≤ 90mm 12 14
≤ 100mm 14 16
≤ 120mm 14 16
≤ 140mm 14 18

6. Problem Cause Solution
Clogged tooth gullet Pitch too low Reduce number of teeth
Poor quality of the cut surface Wrong tooth form Contact our technicians
Wrong cutting parameters Verify cutting parameters on the chart
Poor cutting performance Cutting speed too high Reduce the number of revolutions
Insufficient lubrication Increase pressure and flow rate of the
coolant
Wrong feed rate per tooth Verify feed rate with charts
Wrong cutting angles Verify cutting angles
Filling material at the tip of the tooth Poor sharpening Verify sharpening quality
Vibration during cutting Verify stability of piece
Filling material on the sides of the
tooth
Insufficient lubrication Verify flow rate of coolant
Excessive disc side run-out Use reduced side run-out sawblades
Blade breakage during cutting High working parameters Verify parameters with the charts
Poor clamping of the piece being cut Verify the quality and strength of
clamp
Unsteady feed rate Verify feeding system of the cut-off
machine
Wrong pitch Verify parameters against the charts
Burn marks on the piece being cut Worn saw blade Blade must be resharpened
Insufficient lubrication Increase coolant flow / Check
concentration
Solutions To Frequently Faced Problems

8. MATERIAL TO BE CUT RECOMMENDED COATING
Low- alloy steel 400 - 600 N/mm2 VAPO
Medium hard alloy steel 700 - 900 N/mm2 VAPO / TiN
Hard steel 950 - 1100 N/mm2 TiN / TiAlN
Stainless steel TiCN / TiAlN
Cast iron TiN
Copper Bright / CrN
Bronze Bright / CrN
Brass Bright / CrN
Aluminium Bright / CrN
D 58 Pace City II,
Udyog Vihar Phase VI
Sector 37, Gurgaon – 122001
Haryana, INDIA
www.mechelec.co.in
+91956981100
info@mechelec.co.in
Stocked HSS Circular Saw Blade Sizes:
Coating: Bright / VAPO
Hardness: 60to 62 HRC
Outer Dia: 250/275/300/315/350/400mm
Bore: 32mm
Thickness: 1.5/ 2/2.5mm
Tooth Form: BW
Pitch T: 4mm
Other specifications are made to order